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A318211
Number of nX5 0..1 arrays with every element unequal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
3, 21, 47, 245, 1042, 4794, 20502, 93848, 413543, 1866198, 8419364, 37903931, 171452530, 772835587, 3491017470, 15756245294, 71124997356, 321138172302, 1449613531826, 6544951016378, 29546522979051, 133392926489825
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OFFSET
1,1
COMMENTS
Column 5 of
A318214
.
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=5
..0..0..0..1..0. .0..0..1..1..0. .0..1..1..1..1. .0..1..0..1..0
..1..1..0..0..1. .1..0..1..1..0. .1..1..0..0..1. .1..1..1..1..0
..1..0..0..0..0. .0..1..0..0..0. .1..1..0..1..0. .1..0..1..1..0
..1..1..1..0..0. .0..1..0..1..1. .0..0..0..0..0. .0..1..1..1..0
..0..0..0..0..1. .0..0..0..1..0. .0..1..0..0..1. .0..0..0..0..1
CROSSREFS
Cf.
A318214
.
Sequence in context:
A382709
A360316
A034186
*
A219069
A027499
A303834
Adjacent sequences:
A318208
A318209
A318210
*
A318212
A318213
A318214
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Aug 21 2018
STATUS
approved
